Telegraph-sounder.



-PATENTED A818.l 21, 1908. J. J. THQMAS 8 A. @..GERISTQPHBRSON TELEGRAPH 80818888.

. A PPLIOATION FILED JAN.23,1907.

MW Y umzug? will readily appear as the nature of the in-l UNITED sTATEs` PATENT OEEIOE.

JAMES i. THOMAS, 'or WHITING, IOWA, .AND ALBERT c. c IiRIsToPERsoN, or SCRIBNER,

NEBRASKA.

TELEeRArH-SOUNDEE;

Specification of Letters Patent.

APatented Apiiiei, 190s;l

. Application sied January 2a, 1907. sei-iai No. 353,754.

'and ALBERT G: CHRIsTOPIiERsON, citizens of the United States of America, residing, re-

-s ectively, at Whiting, in the county of onona and State of Iowa, and at Scribner, in the county of Dodge and- State of Ne braska, `have invented new and usefiil Improvements in Telegraph-Sounders, of which the following is a specification.

This invention relates to telegraphic sounding instruments, and it has for its objects to simplify and improve the construcvtion and O eration of this class 'of devices.

A s )ecia object of the invention is to enable tie telegraphic sounding apparatus to be efficiently o erated with the least possible expenditure ci) electrical energy, and'especially without the use of locaI batteries; a permanent #ma vthe latter, as will be hereinafter described.

With these and other ends in view which vention is better understood, the same consists in the improved construction and novel arrangement and combination of parts which will be hereinaftenfully described, and particularly pointedI out lin' the claims.

In the accompanying drawings has been illustrated a simple and preferred form of the invention; it being, however, Aunderstood that no limitation isl necessarily made to theprecise structural details therein exhibited, ut that changes, alterations and modifications within thescope of the invention may be resorted to, when desired.

In the vdrawings:----1.`igure I-'is a top plan view of a telegra h -sounder constructedin accordance with t ie principles of the inven-y tion. 'Fig. Buis asideelevation of the same.

A suitable base, 1 'is .provided with uprights, 2, 2, supporting a permanentmagnet Pivotally'mounted upon the base, in iront of the permanent magnet, is a lever, 4, carrying an electro-magnet, -5`,' the winding of' which is includedin the line circuit. id

-' electroemagnet is 'disposedfacing the permanent magnet, and in such a manner that, when energized, it will be repelled by said ffnet being substituted for- Corresponding parts in the several figuresl are denoted by like characters offreference ably connected with t e lever 4 to support parts will operate very freely; When'theelectro-magnet is denergized, it will bexobvi-v 4The base 1 supports a pivot'edrkey, 7, w'thich 1a spring, 8,'into engagement with a contact The key 7 and the bridge-piece 10 are respectivelyconnected with the-line-wires lland 12; the circuit being normallyclosed, as will be seen. j

When the line circuit is closed, the ,electrotro-magnet 5 is denergized, and is conse- Irwin be geen that by uis use of, this ist.

pensedwith, the work being performed'b the permanent magnet in conjunction wit delicately poised that the'apparatus maybe less intensity than is ordinarily required.

Having thus described the invention, what `is claimed is:- j

In a telegraphic sounding apparatus, a

supported upon the upr'ig ts, a lever pivoted upon the base, an electro-magnetl supported by the lever adjacent to the ermanent magnet and normally repelled Ey the latter, a

support the weight of the electromagnet 'and net.

in presence of two witnesses. 'A JAMES J. THOMAS. Witnesses:

ERNEST MOBEATH, W. G. BROWN.

in presence of two witnesses:

Witnesses:

NORA R. KIDDER,

LULU B. LOKE.

permanent magnet; a s ring, 6, being preferis normally forced in an upward` direction by;

screw, 9, supported by a' bridge-piece, 10.v

magnet 5, vbeing energized, is repelled by the permanent magnet 3; when, by de r'essing the key 7, the line circuit is broken,.t e elec-v =z spring connecting the lever with the base to' In testimony whereof, I affix my signature ALBERT G. CHRISTOPIII'IIRSON.

.the weight of the electro-magnet, so tliat the ouslyattracted by the permanent magnet.

quently atti-,acted by the permanent magnet with @audible and distinct click.. t

proved apparatus local batteries may be disi i ythe electro-magnet,which latter may be so 80 f successfully operated Witha current of i'nuch 'v base havinguprights, a ermanent magnet i a breaking circuit including the electro-mag- 'In testimony whereof, I affix my signature 

